From 3Ders.org:
This proof-of-concept logo was 3D printed using a new additive manufacturing process, light-directed electrophoretic deposition (EPD). A layer of tungsten nanoparticles (dark brown) was first deposited on areas illuminated through a laser cut aluminum mask. The mask was then changed, along with the solution of nanoparticles, to deposit alumina ceramic material (white). In the future, the masks will be replaced by a digitally projected mask for a completely automated deposition system.
Researchers used light-directed EPD to produce an alumina ceramic-tungsten nanoparticle composite. Initially, the tungsten nanoparticles were deposited across the photoconductive surface, then illuminated through a laser cut aluminum mask. A different shaped mask was then substituted along with the new material, to deposit the ceramic material. In the future, the aluminum masks will be replaced by a digitally projected mask, similar to those found in DLP televisions, for a completely automated deposition system.
Light-directed electrophoretic deposition has the potential to elevate traditional EPD from a single layer, single material coating process to a true additive manufacturing technique that allows for unique composites to be formed. For example, void areas can be precisely created in a part to control polymer material behaviors for energy absorption or within cellular material for the creation of veins or blood vessels for manufactured organs....MORE
